Crane Operator Certification Exam Prep · Question
How does the use of a jib (e.g., an auxiliary jib or fly jib) fundamentally affect the crane's overall lifting capacity compared to lifting directly from the main boom?
While jibs extend reach and allow for higher hook heights, they also add weight and increase the effective operating radius, which generally results in a signif
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Question: How does the use of a jib (e.g., an auxiliary jib or fly jib) fundamentally affect the crane's overall lifting capacity compared to lifting directly from the main boom?
Answer options:
- It always increases the crane's capacity for all loads. ✅ It generally reduces the gross lifting capacity but extends reach.
- It has no impact on capacity, only on hook height.
- It eliminates the need for outriggers due to increased stability.
Correct answer: It generally reduces the gross lifting capacity but extends reach.
Explanation: While jibs extend reach and allow for higher hook heights, they also add weight and increase the effective operating radius, which generally results in a significant reduction in the crane's gross lifting capacity.
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Question explanations
- According to most Canadian provincial regulations, who is ultimately responsible for the safe operation of a c
- A crane's rated capacity decreases as the load radius:
- What is the minimum number of full wraps of wire rope that must remain on a hoist drum when the hook is in its
- Before setting up a mobile crane, what is the most important factor to assess regarding ground conditions?
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